Multistatic bottom reverberation in shallow water

Abstract

A wavenumber integration approach to modeling of the full multistatic reverberant field produced by small-scale bottom roughness in stratified shallow water waveguides has been developed. A perturbation approach to rough elastic interface scattering has been combined with the OASES seismo-acoustic propagation model for stratified waveguides, yielding the capability of producing realizations and spatial statistics of bottom reverberation for multistatic sonar configurations in shallow water with a rough, stratified, elastic bottom. The formulation handles roughness with arbitrary anisotropic power spectra, and incorporates scattering into both the water column and the various seismic waves in the bottom.